The White Truffle is worlds most expensive ingredient. This mushroom is grown only in a small area around the Piedmont region of Italy and has a very short gestation period. One piece of that thing can be sold for $150,000.

Louis XIII is the worlds most expensive pizza. Italian chefs take 3 days to make it. It's dough is sprinkled with many interesting spices such as lobster, caviar and hand-picked salt from the Murray River. One of those will cost you $12,000.

Saffron is the worlds most expensive spice. It's threads are made of the reproductive organs of a flower by the name crocus sativus and it takes 75,000 of those to make a pound of Saffron. A gram of this flavorful spice can cost $15.

The most deadly food is Fugu. Due to it's toxic nature fugu sales are strictly regulated in U.S. and Japan and are banned all together in Europe. Fugu chefs go through some serious training in order to be able to prepare this exclusive and expensive dish.

Worlds rarest food is the bird's nest soup. This delicacy has been eaten in China for many years and is extremely hard to acquire. Swiflets use their sticky saliva to make nests high up in hard to reach places of coastal caves. This soup costs from $30-$100.